Dongfeng VL truck parts Left unhook pin cover 8406039-C4302 in stocked

Built to withstand road debris impacts (e.g., stones, gravel) and minor collisions with curbs, the cover is crafted from a high-performance PP+EPDM composite (70% polypropylene, 30% ethylene propylene diene monomer). This material delivers a notched Izod impact strength of 10.5 kJ/m² at -35°C, resisting cracking in frigid climates, and a heat deformation temperature of 112°C—preventing warping under direct sunlight or engine bay heat. The composite’s inherent flexibility allows it to absorb impacts (up to 50N force) without permanent deformation, retaining its shape even after 300+ contact cycles. It also exhibits strong chemical resistance, withstanding exposure to road salt, diesel fuel, and automotive cleaning agents without discoloration or material degradation (tested to 350 hours of chemical immersion). Compared to brittle ABS plastic covers, this PP+EPDM design extends service life by 55% under heavy-duty use in construction or mining environments

Engineered to protect the left unhook pin from water, dust, and corrosion—major causes of pin jamming— the cover features a dual-sealing system. A 2mm-thick EPDM rubber gasket (integrated into the cover’s inner edge) creates a tight seal against the unhook pin housing, achieving an IP67 protection rating (preventing ingress of dust and water immersion up to 1m depth for 30 minutes). The cover’s top surface also includes a raised, dome-shaped structure that diverts rainwater and snow away from the pin housing, reducing moisture accumulation by 80% vs. flat-design covers. Additionally, the cover’s inner cavity is treated with a corrosion-inhibiting spray (zinc-rich primer), adding an extra layer of protection for the unhook pin’s metal surface. This sealing design ensures the pin remains operational even after 1,200 hours of exposure to humid or dusty conditions, eliminating the need for frequent cleaning or lubrication

Designed to blend seamlessly with the Dongfeng VL’s left bumper, the cover features a factory-matched finish available in two options: matte black (Pantone 19-4010 TPX) or body-color matching (customizable to the VL’s original paint code). The finish is applied via an electrostatic spraying process, with a 28μm-thick polyurethane topcoat that delivers a uniform texture (Ra ≤1.8μm) and 88% gloss retention after 2,200 hours of xenon lamp aging (equivalent to 2.5 years of outdoor use). The cover’s outer edge is polished to a smooth radius (R5mm), eliminating sharp edges that could catch on debris and maintaining the bumper’s sleek, professional appearance. Unlike aftermarket covers with mismatched colors or textures, this factory-designed cover ensures visual consistency across the VL’s front-end, critical for fleet vehicles requiring uniform branding

Designed for easy access to the left unhook pin during towing operations, the cover uses a user-friendly quick-release mechanism with two integrated nylon 66 latches (tensile strength ≥150N). To open, simply press the two side latches simultaneously—no tools required—and the cover pops off in 2–3 seconds, revealing the full unhook pin for immediate use. Closing the cover is equally simple: align the cover with the pin housing and press until the latches “click” into place, ensuring a secure fit. The latches are reinforced with 1mm-thick steel inserts, preventing breakage from repeated use (tested to 1,500 open/close cycles without failure). For added convenience, the cover’s top surface includes a small, textured grip pad that improves handling when removing the cover with gloved hands (common in heavy-duty operations). Each unit undergoes latch retention testing, dimensional inspection via CMM, and sealing performance checks, backed by a 12-month warranty against defects (e.g., latch breakage, seal failure, finish peeling)